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/*-
* Copyright (c) 2006 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/ofw_machdep.h>
#include <dev/ofw/openfirm.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_cpu.h>
bus_space_tag_t uart_bus_space_io = &bs_le_tag;
bus_space_tag_t uart_bus_space_mem = &bs_le_tag;
int
uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
{
return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0);
}
static int
ofw_get_uart_console(phandle_t opts, phandle_t *result, const char *inputdev,
const char *outputdev)
{
char buf[64];
phandle_t input;
if (OF_getprop(opts, inputdev, buf, sizeof(buf)) == -1)
return (ENXIO);
input = OF_finddevice(buf);
if (input == -1)
return (ENXIO);
if (OF_getprop(opts, outputdev, buf, sizeof(buf)) == -1)
return (ENXIO);
if (OF_finddevice(buf) != input)
return (ENXIO);
*result = input;
return (0);
}
int
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
{
char buf[64];
struct uart_class *class;
phandle_t input, opts;
int error;
class = &uart_z8530_class;
if (class == NULL)
return (ENXIO);
if ((opts = OF_finddevice("/options")) == -1)
return (ENXIO);
switch (devtype) {
case UART_DEV_CONSOLE:
if (ofw_get_uart_console(opts, &input, "input-device",
"output-device")) {
/*
* At least some G5 Xserves require that we
* probe input-device-1 as well
*/
if (ofw_get_uart_console(opts, &input, "input-device-1",
"output-device-1"))
return (ENXIO);
}
break;
case UART_DEV_DBGPORT:
if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf)))
return (ENXIO);
input = OF_finddevice(buf);
if (input == -1)
return (ENXIO);
break;
default:
return (EINVAL);
}
if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
return (ENXIO);
if (strcmp(buf, "serial") != 0)
return (ENXIO);
if (OF_getprop(input, "name", buf, sizeof(buf)) == -1)
return (ENXIO);
if (strcmp(buf, "ch-a") == 0) {
class = &uart_z8530_class;
di->bas.regshft = 4;
di->bas.chan = 1;
} else if (strcmp(buf,"serial") == 0) {
class = &uart_ns8250_class;
di->bas.regshft = 0;
di->bas.chan = 0;
} else
return (ENXIO);
error = OF_decode_addr(input, 0, &di->bas.bst, &di->bas.bsh);
if (error)
return (error);
di->ops = uart_getops(class);
if (OF_getprop(input, "clock-frequency", &di->bas.rclk,
sizeof(di->bas.rclk)) == -1)
di->bas.rclk = 230400;
if (OF_getprop(input, "current-speed", &di->baudrate,
sizeof(di->baudrate)) == -1)
di->baudrate = 0;
di->databits = 8;
di->stopbits = 1;
di->parity = UART_PARITY_NONE;
return (0);
}
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